How to use struts2 rest-style and default style at same time

[ryman1981]

I want to use struts2 default-style and rest-style at the same time,for example the login action does struts default method execute(). but when I add the struts2-rest-plugin in lib, my default-style does not work. And when I use the configuration properties:
<constant name="struts.mapper.class" value="composite"/>
<constant name="struts.mapper.composite" value="struts,rest"/>
<constant name="struts.convention.action.suffix" value="Controller" />
<constant name="struts.convention.action.mapAllMatches" value="true" />
<constant name="struts.convention.default.parent.package" value="rest-default" />
<constant name="struts.convention.package.locators" value="example" />
then the rest-style does not work. But when I change the property <constant name="struts.mapper.composite" value="rest,struts"/> the default-style does not work.
How to solve it? Thanks a lot!